<template>
    <el-form inline="true">
      <el-form-item>
        <selector v-model="params.difficulty" placeholder="请选择题目难度" style="width: 200px;"></selector>
      </el-form-item>
      <el-form-item>
        <el-input v-model="params.title" placeholder="请您输入要搜索的题目标题" />
      </el-form-item>
      <el-form-item>
        <el-button plain @click="onSearch">搜索</el-button>
        <el-button plain type="info" @click="onReset">重置</el-button>
        <el-button plain type="primary" :icon="Plus" @click="onAddQuestion">添加题目</el-button>
      </el-form-item>
    </el-form>
    <el-table height="526px" :data="questionList">
      <el-table-column prop="questionId" width="180px" label="题目id" />
      <el-table-column prop="title" label="题目标题" />
      <el-table-column prop="difficulty" label="题目难度" width="90px">
        <template #default="{ row }">
          <div v-if="row.difficulty === 1" style="color:#3EC8FF;">简单</div>
          <div v-if="row.difficulty === 2" style="color:#FE7909;">中等</div>
          <div v-if="row.difficulty === 3" style="color:#FD4C40;">困难</div>
        </template>
      </el-table-column>
      <el-table-column prop="createName" label="创建人" width="140px" />
      <el-table-column prop="createTime" label="创建时间" width="180px" />
      <el-table-column label="操作" width="100px" fixed="right">
        <template #default="{ row }">
          <el-button type="text" @click="onEdit(row.questionId)">编辑
          </el-button>
          <el-button type="text" class="red" @click="onDelete(row.questionId)">删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>
    <el-pagination background size="small"  layout="total, sizes, prev, pager, next, jumper" :total="total" 
        v-model:current-page="params.pageNum" v-model:page-size="params.pageSize" 
        :page-sizes="[1, 5, 10, 15, 20]" @size-change="handleSizeChange" @current-change="handleCurrentChange"/>

        <question-drawer ref="questionEditRef" @success="onSuccess"></question-drawer>
  </template>
  
  <script setup>
    import { Plus } from "@element-plus/icons-vue"
    import Selector from "@/components/QuestionSelector.vue"
    import { getQuestionListService, delQuestionService } from "../apis/question" 
    import { reactive, ref } from "vue"
    import QuestionDrawer from "../components/QuestionDrawer.vue"

    const params = reactive({
        pageNum: 1,
        pageSize: 10,
        difficulty: '',
        title: ''
    })

    const questionList = ref([])
    const total = ref(0)

    async function getQuestionList() {
      const result = await getQuestionListService(params)
      console.log("result: ",result)
      questionList.value = result.rows
      total.value = result.total
    }
    getQuestionList()

    function handleSizeChange(newSize) {
      // params.pageSize = newSize
      params.pageNum = 1
      getQuestionList()
    }

    function handleCurrentChange(newPage) {
      // params.pageNum = newPage
      getQuestionList()
    }

    function onSearch() {
      params.pageNum = 1
      getQuestionList()
    }

    function onReset() {
      params.pageNum = 1
      params.pageSize = 10
      params.title = ''
      params.difficulty = ''
      getQuestionList()
    }

    const questionEditRef = ref()

    const onAddQuestion = () => {
      questionEditRef.value.open()
    }

    function onSuccess(service) {
      if(service == 'add') {
        params.pageNum = 1
      }
      getQuestionList() //获取题目列表
    }

    async function onEdit(questionId) {
      questionEditRef.value.open(questionId)
    }

    async function onDelete(questionId) {
      await delQuestionService(questionId)
      params.pageNum = 1
      getQuestionList()
    }
  </script>